Cell Membrane Structure and Function Cell Membrane Structure Pg. 95 A.Function 1.Allows for movement into and out of the cell 2.Protection / Support.

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Presentation transcript:

Cell Membrane Structure and Function

Cell Membrane Structure Pg. 95 A.Function 1.Allows for movement into and out of the cell 2.Protection / Support 3.Maintains homeostasis

Cell Membrane Structure Pg. 95 B. Fluid Mosaic Model 1. Fluid – moves

Fluid

Cell Membrane Structure Pg. 95 B. Fluid Mosaic Model 1. Fluid – moves 2. Mosaic – many parts

Mosaic 1.Phospholipids 2.Membrane Proteins 3.Cholesterol 4.Surface Carbohydrates

Fluid-Mosaic Model

Cell Membrane Structure Pg. 95 C. Parts 1.Phospholipid Bilayer

Phospholipid Bilayer

Cell Membrane Structure Pg. 95 C. Parts 2.Proteins Carrier – moves large particles

Many Functions of Membrane Proteins Outside Plasma membrane Inside Transporter Cell surface receptor Enzyme activity Cell surface identity marker Attachment to the cytoskeleton Cell adhesion

Proteins

Cell Membrane Structure Pg. 95 C. Parts 3.Lipids – (Cholesterol)

Cholesterol

Cell Membrane Structure Pg. 95 C. Parts 4.Carbohydrates cell recognition, cell signaling, cell adhesion

Carbohydrates

Cell Membrane Structure Pg. 95 D. Description 1. Semi-permeable 2. Only allows certain materials through

Semi-Permeable

Pg. 94

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